CN117279131B - PTC heater with self-protection structure - Google Patents
PTC heater with self-protection structure Download PDFInfo
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- CN117279131B CN117279131B CN202311551240.6A CN202311551240A CN117279131B CN 117279131 B CN117279131 B CN 117279131B CN 202311551240 A CN202311551240 A CN 202311551240A CN 117279131 B CN117279131 B CN 117279131B
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- ptc heater
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- fixedly arranged
- frame
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- 238000001816 cooling Methods 0.000 claims description 17
- 230000000149 penetrating effect Effects 0.000 claims description 16
- 238000007664 blowing Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 5
- 239000000428 dust Substances 0.000 description 38
- 230000000903 blocking effect Effects 0.000 description 24
- 230000002159 abnormal effect Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 12
- 230000017525 heat dissipation Effects 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 241000883990 Flabellum Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Direct Air Heating By Heater Or Combustion Gas (AREA)
Abstract
The invention discloses a PTC heater with a self-protection structure, which relates to the technical field of PTC heaters and comprises a shell and a PTC heater body arranged in the shell, wherein an air outlet is formed in the front surface of the shell.
Description
Technical Field
The invention relates to the technical field of PTC heaters, in particular to a PTC heater with a self-protection structure.
Background
PTC heaters are a common type of electrical heating device in which PTC represents a positive temperature coefficient.
The existing PTC heaters still have some disadvantages:
1. in environments where dust flies, such as industrial sites, a dust cover or other appropriate protective measures are usually arranged around the PTC heater to prevent dust from entering the inside of the heater and affecting the normal operation of the PTC heater, but after a period of use, the dust cover is blocked, so that heat generated in the operation process of the PTC heater cannot be timely discharged, and the electronic elements or the PTC heater are damaged, even potential safety hazards are caused.
2. When the dust cover is blocked, the existing PTC heater causes no circulation of air, so that the PTC heater is abnormal in high temperature, heat dissipation and cooling treatment cannot be timely and efficiently performed on the PTC heater, self protection is lacked, damage is easily caused, the service life is prolonged, and the PTC heater with the self protection structure is provided for the problems.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides the PTC heater with the self-protection structure, which solves the problems that the PTC heater is in a dust flying environment, such as an industrial site, a dust cover or other proper protection measures are usually arranged around the PTC heater to prevent dust from entering the heater to affect the normal operation of the PTC heater, but after the PTC heater is used for a period of time, the dust cover is blocked, so that heat generated in the working process of the PTC heater cannot be timely discharged, an electronic element or the PTC heater is damaged, even potential safety hazards are caused, the air is not circulated when the dust cover is blocked, the high temperature of the PTC heater is abnormal, the PTC heater cannot be timely and efficiently cooled, the self-protection is lacked, the damage is easy to cause, and the service life is shortened.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the PTC heater with the self-protection structure comprises a shell and a PTC heater body arranged in the shell, wherein an air outlet is formed in the front surface of the shell, a blowing fan is arranged in the air outlet, a first dustproof net is arranged in the air outlet, the first dustproof net is positioned at the front side of the blowing fan, a rectangular frame is fixedly arranged at the back end of the shell, the middle part of the rectangular frame is hollow, the middle part of the rectangular frame is communicated with the inside of the shell, a frame is slidably arranged in the rectangular frame, a second dustproof net is embedded in the frame, a connecting block is fixedly arranged on the frame and movably penetrates through the rectangular frame, a contact plate is fixedly arranged on the connecting block, a heat conducting component is arranged on the shell and comprises a heat conducting plate, a through hole is formed in the upper surface of the shell and fixedly arranged in the through hole, the bottom end of the heat conducting plate is fixedly provided with radiating fins at equal intervals, the upper end of the shell is fixedly provided with a fixed frame, the upper end of the fixed frame is provided with a plugging plate, the plugging plate is fixedly provided with a fixed shaft, the plugging plate is hinged with the fixed frame through the fixed shaft, the fixed shaft is provided with a torsion spring, the plugging plate is positioned at the upper end of the through hole, the fixed frame is provided with a driving component, the driving component comprises a connecting shaft II, one end of the connecting shaft II is rotatably arranged in the fixed frame, the connecting shaft II is fixedly provided with a gear III and a rotary disc, the surface of the rotary disc is provided with an arc-shaped clamping groove, three radiating fan blades are arranged in the fixed frame and positioned above the heat conducting plate, the shell is provided with a jacking component, the jacking component comprises a motor, the motor is fixedly arranged on the shell, the output shaft of the motor is fixedly connected with a driving shaft, a cam is fixedly arranged on the driving shaft, and the protruding part of the cam is attached to the surface of the contact plate.
Preferably: the PTC heater comprises a PTC heater body, wherein mounting plates are fixedly mounted at two side end parts of the PTC heater body, the two mounting plates are L-shaped, screws are screwed into the two mounting plates in a rotating mode, and the two mounting plates are respectively fixed with the inner wall of a shell through the screws.
Preferably: three penetrating rods are fixedly installed on the rectangular frame, and each penetrating rod movably penetrates through the rectangular frame.
Preferably: the outer side end part of the rectangular frame is fixedly provided with three fixing plates, wherein each penetrating rod penetrates through the fixing plates movably, and each penetrating rod is fixedly provided with a round sleeve.
Preferably: each round sleeve is located on the outer side of the rectangular frame, and a first spring is arranged between each round sleeve and each fixing plate.
Preferably: the driving gear is fixedly arranged on the driving shaft, the driven gear is fixedly arranged on the second connecting shaft, and the driving belt II is sleeved on the driven gear and the driving gear.
Preferably: the fixed frame is rotatably provided with a first connecting shaft, the first connecting shaft is fixedly provided with a second bevel gear, the second bevel gear is meshed with the third bevel gear, and the first connecting shaft is fixedly provided with a second bevel gear.
Preferably: the fixed frame is internally and fixedly provided with a gear II, each radiating fan blade is fixedly provided with a rotating shaft, each rotating shaft is rotatably arranged on the gear II, each rotating shaft is fixedly provided with a gear I, and the gear I is sleeved with a transmission belt I.
Preferably: the motor and the driving gear are positioned in the protecting shell.
Preferably: the baffle is fixedly installed on the plugging plate, the clamping block is slidably installed on the plugging plate, the round rod is fixedly installed on the clamping block and movably penetrates through the baffle, the spring II is sleeved on the round rod, the clamping block is fixedly connected with the baffle through the spring II, and the clamping block is movably clamped in the arc-shaped clamping groove.
(III) beneficial effects
1. The cam can be driven to rotate through rotation of the driving shaft, when the protruding portion of the cam contacts with the surface of the contact plate, the cam can apply a thrust to the contact plate, the contact plate pushes the frame to move, the frame can drive the penetrating rod and the round sleeve to move, the round sleeve can apply acting force to the first spring to enable the first spring to be compressed under the force, when the protruding portion of the cam does not contact with the surface of the contact plate, the frame is reset through elastic reset action of the first spring, the frame horizontally reciprocates through continuous rotation of the cam and vibration is generated, dust or impurities attached to the second dust screen shake and drop, the self-cleaning effect is achieved, the condition that the second dust screen is blocked is solved, circulation of outside air and air inside the shell is guaranteed, the problem that air is not circulated due to the second dust screen blocking is solved, temperature of the PTC heater body is increased, and damage of an electronic element or the PTC heater body is caused.
2. The turntable is driven to rotate through the rotation of the connecting shaft II, the position of the turntable is changed, so that the clamping block is separated from the arc-shaped clamping groove, the clamping block is not blocked, the elastic resetting effect of the torsion spring is utilized, the blocking plate rotates around the fixed shaft as the axis, the blocking plate is overturned, the blocking plate is prevented from blocking the port of the fixed frame, the heat conducting plate is exposed to the outside, the heat radiating fins are fixedly arranged at equal intervals at the bottom end of the heat conducting plate, the heat inside the shell is transferred to the heat conducting plate and the heat radiating fins, the heat conducting plate radiates the heat into the air, the aim of radiating and cooling the PTC heater body is fulfilled, the problem that the air is not circulated due to the blocking of the second dustproof net, the high temperature of the PTC heater body is caused, the damage of the electronic element or the PTC heater body is solved, and the integrity of the PTC heater body is ensured.
3. The blowing fan is started, so that the heat of the electric heating of the PTC heater body is sent out from the air outlet, the heating effect is achieved, the plugging plate is arranged on the fixing frame, when the PTC heater body is maintained at the normal temperature, the port of the fixing frame is plugged by the plugging plate, the heat loss from the through hole can be effectively avoided, the heat loss is reduced, and the structure design is reasonable.
4. The connecting shaft II can drive the gear III and rotate when rotating, can drive the gear II to rotate through the rotation of the gear III, can drive the connecting shaft to rotate through the rotation of the gear II, can drive the bevel gear II to rotate through the rotation of the connecting shaft I, can drive the bevel gear I to rotate through the rotation of the bevel gear II, can drive the rotating shaft to rotate through the rotation of the bevel gear I, because the transmission belt I is sleeved on the three gear I, the three radiating fan blades rotate, the heat dissipation and the temperature reduction can be carried out on the heat conducting plate through the rotation of the three radiating fan blades, the efficient heat transfer of the heat conducting plate is ensured, thereby improving the efficiency of the heat conducting plate and the heat radiating fins for cooling the PTC heater body, enabling the PTC heater body to be rapidly maintained in a normal temperature range, and avoiding the damage of the PTC heater body and the electronic element caused by high temperature.
5. Through starting the motor for the carousel rotates to reset, then presses the shutoff board, and promote the fixture block, the spring is the atress compression state this moment, when the shutoff board covers the port of fixed frame completely, loosen the fixture block, utilize the elasticity reset effect of spring two, make the fixture block insert in the arc draw-in groove on the carousel, realize blockking to the fixture block position, the shutoff board will be fixed on the port of fixed frame this moment, realize the shutoff to the heat conduction board, it is more convenient to install the shutoff board and reset, when the PTC heater body is unusual at not high temperature, through the shutoff of shutoff board, in order to prevent thermal loss, when the PTC heater body is unusual at high temperature, the shutoff board is opened, utilize heat transfer to the PTC heater body by heat-conducting plate and radiating fin, the rotation of radiator fan blade, make the cooling to the PTC heater body more high-efficient, and the shake of frame and second dust net is being shaken and dropping, make the outside air and the normal circulation of shell inside air, more efficient carries out the shutoff to the PTC heater body on the PTC heater body, the effect of the self-heating body has been avoided, the PTC heater body is damaged by the heat loss, the PTC heater body is avoided to the heat loss of the body is well-protecting.
Drawings
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings.
Fig. 1 is a structural view of the entire PTC heater with the self-protection structure of the present invention;
FIG. 2 is a block diagram of a protective shell of the present invention;
FIG. 3 is a block diagram of the invention in a cut-away view of the housing;
FIG. 4 is a block diagram of a contact plate of the present invention;
FIG. 5 is a schematic diagram of a broken-away exploded perspective view of the housing of the present invention;
FIG. 6 is a block diagram of a rectangular frame of the present invention in cross-section;
FIG. 7 is a block diagram of a closure plate of the present invention;
fig. 8 is a structural view of a second connecting shaft according to the present invention.
Legend description: 1. a housing; 11. a PTC heater body; 12. a mounting plate; 13. an air outlet; 14. a blowing fan; 15. a first dust screen; 16. a protective shell; 2. a rectangular frame; 21. a connecting block; 22. a contact plate; 23. a frame; 24. a second dust screen; 25. a penetrating rod; 26. a round sleeve; 27. a fixing plate; 28. a first spring; 3. a heat conductive plate; 31. a heat radiation fin; 4. a fixed frame; 41. radiating fan blades; 42. a rotating shaft; 43. a first gear; 44. a first transmission belt; 45. a first conical gear; 46. a first connecting shaft; 47. a second bevel gear; 48. a second gear; 5. a second connecting shaft; 51. a third gear; 52. a turntable; 53. an arc-shaped clamping groove; 54. a driven gear; 6. a plugging plate; 61. a fixed shaft; 62. a clamping block; 63. a round bar; 64. a second spring; 65. a baffle; 7. a motor; 71. a drive shaft; 72. a cam; 73. a drive gear; 74. and a second driving belt.
Detailed Description
The embodiment of the application effectively solves the problem that the PTC heater cannot timely discharge heat in the working process, damage to electronic elements or the PTC heater is caused, even potential safety hazards are caused, air is not circulated when the existing PTC heater is blocked by the dust cover, so that the PTC heater is abnormal in high temperature, cannot timely and efficiently perform heat dissipation and temperature reduction treatment on the PTC heater, self protection is lacked, damage is easily caused, and the service life is reduced, the PTC heater with the self-protection structure can drive the cam to rotate through the rotation of the driving shaft, when the protruding part of the cam contacts with the surface of the contact plate, the cam can apply a pushing force to the contact plate, so that the contact plate pushes the frame to move, the frame can drive the penetrating rod and the round sleeve to move, the round sleeve can apply an acting force to the spring I, so that the spring I is compressed, when the protruding part of the cam is not contacted with the surface of the contact plate, the elastic reset action of the spring I is utilized, so that the frame is reset, the frame horizontally reciprocates through the continuous rotation of the cam and generates vibration, thereby enabling dust or impurities attached on the second dust screen to shake and fall, playing the self-cleaning effect, solving the blocking condition of the second dust screen, ensuring the circulation of outside air and air in the shell, solving the problem that air is not circulated due to the blocking of the second dust screen, the temperature of the PTC heater body is increased to cause damage to the electronic element or the PTC heater body, the turntable is driven to rotate by the rotation of the connecting shaft II, the position of the turntable is changed by the rotation of the turntable, so that the clamping block is separated from the arc-shaped clamping groove, the clamping block is not blocked, the blocking plate rotates around the fixed shaft by utilizing the elastic reset function of the torsion spring to enable the blocking plate to overturn, the blocking plate is prevented from blocking the port of the fixed frame, the heat conducting plate is exposed to the outside, the radiating fins are fixedly arranged at equal intervals at the bottom end of the heat conducting plate, the heat in the shell is transferred to the heat conducting plate and the radiating fins, the heat is dissipated by the heat conducting plate, the purpose of radiating and cooling the PTC heater body is achieved, the problem that the PTC heater body is high in temperature due to non-circulation of air caused by the blocking of the second dustproof net is solved, the damage of the electronic element or the PTC heater body is caused, the PTC heater body is ensured to be in good condition, the fan is started, the heat of the PTC heater body which is electrically heated is sent out from the air outlet to play a role of heating, when the PTC heater body is maintained at normal temperature, the plugging plate is arranged on the fixing frame, the plugging plate plugs the port of the fixing frame, so that the heat loss from the through hole can be effectively avoided, the heat loss is reduced, the structural design is reasonable, the connecting shaft II can drive the gear III to rotate when rotating, the gear II can be driven to rotate through the rotation of the gear III, the connecting shaft I can be driven to rotate through the rotation of the connecting shaft II, the bevel gear I can be driven to rotate through the rotation of the bevel gear II, the rotating shaft I can be driven to rotate through the rotation of the bevel gear I, because the first transmission belt is sleeved on the first gear, the three radiating fan blades rotate, the heat conducting plate is radiated and cooled through the rotation of the three radiating fan blades, the efficient heat transfer of the heat conducting plate is ensured, thereby the efficient temperature reduction of the heat conducting plate and the radiating fins to the PTC heater body is improved, the cooling efficiency of the PTC heater body is improved, the PTC heater body is quickly maintained in a normal temperature range, the damage of the PTC heater body and the electronic element caused by high temperature is avoided, the turntable rotates and resets through starting the motor, then the sealing plate is pressed, the second spring is in a stressed compression state, when the sealing plate completely covers the port of the fixed frame, the second spring is released, the elastic reset function of the second spring is utilized, the sealing block is inserted into the arc-shaped clamping groove on the turntable, the blocking of the position of the sealing block is realized, at this time, the plugging plate is fixed on the port of the fixed frame, plugging of the heat conducting plate is realized, the installation and resetting of the plugging plate are more convenient, when the PTC heater body is not abnormal at high temperature, heat loss is prevented by plugging of the plugging plate, when the PTC heater body is abnormal at high temperature, the plugging plate is opened, heat on the PTC heater body is transferred by the heat conducting plate and the radiating fins, the rotation of the radiating fins is matched, so that the heat dissipation and the cooling of the PTC heater body are more efficient, and the shaking of the frame and the second dustproof net is matched, dust on the frame and the second dustproof net is shaken and falls, so that the outside air and the air inside the shell normally circulate, the PTC heater body is more efficiently cooled, the self-protection function is played, the damage of the PTC heater body caused by the abnormal high temperature is avoided, the integrity of the PTC heater body is ensured.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7 and fig. 8, the technical scheme in the embodiment of the application effectively solves the problem that the PTC heater is in a dust-flying environment, such as an industrial site, a dust cover or other proper protective measures are usually arranged around the PTC heater to prevent dust from entering the inside of the heater to affect the normal operation of the PTC heater, but after a period of use, the dust cover is blocked, so that heat generated in the working process of the PTC heater cannot be timely discharged, damage to an electronic element or the PTC heater is caused, even potential safety hazards are caused, and the existing PTC heater cannot perform heat dissipation and temperature reduction treatment on the PTC heater in a timely and efficient manner, lacks self protection and is easy to cause damage, so that the technical problem of service life is reduced, and the general idea is as follows:
aiming at the problems existing in the prior art, the invention provides a PTC heater with a self-protection structure, which comprises a shell 1 and a PTC heater body 11 arranged in the shell 1, wherein an air outlet 13 is arranged on the front surface of the shell 1, a blowing fan 14 is arranged in the air outlet 13, a first dustproof net 15 is arranged in the air outlet 13 and positioned at the front side of the blowing fan 14, a rectangular frame 2 is fixedly arranged at the back end of the shell 1, the middle part of the rectangular frame 2 is hollow, the middle part of the rectangular frame 2 is communicated with the inside of the shell 1, a frame 23 is arranged in the rectangular frame 2 in a sliding way, a second dustproof net 24 is embedded in the frame 23, a connecting block 21 is fixedly arranged on the frame 23, the connecting block 21 movably penetrates the rectangular frame 2, a contact plate 22 is fixedly arranged on the connecting block 21, a heat conducting component is arranged on the shell 1 and comprises a heat conducting plate 3, the upper surface of the shell 1 is provided with a through hole, the heat conducting plate 3 is fixedly arranged in the through hole, the bottom end of the heat conducting plate 3 is fixedly provided with radiating fins 31 at equal intervals, wherein the upper end of the shell 1 is fixedly provided with a fixed frame 4, the upper end of the fixed frame 4 is provided with a plugging plate 6, the plugging plate 6 is fixedly provided with a fixed shaft 61, the plugging plate 6 is hinged with the fixed frame 4 through the fixed shaft 61, the fixed shaft 61 is provided with a torsion spring, the plugging plate 6 is positioned at the upper end of the through hole, the fixed frame 4 is provided with a driving component, the driving component comprises a connecting shaft II 5, one end of the connecting shaft II 5 is rotatably arranged in the fixed frame 4, the connecting shaft II 5 is fixedly provided with a gear III 51 and a rotary disc 52, the surface of the rotary disc 52 is provided with an arc clamping groove 53, the fixed frame 4 is internally provided with three radiating fan blades 41, the three radiating fan blades 41 are positioned above the heat conducting plate 3, wherein the shell 1 is provided with a jacking component, the jacking component comprises a motor 7, the motor 7 is fixedly arranged on a shell 1, an output shaft of the motor 7 is fixedly connected with a driving shaft 71, a cam 72 is fixedly arranged on the driving shaft 71, a protruding part of the cam 72 is attached to the surface of a contact plate 22, mounting plates 12 are fixedly arranged at two side ends of a PTC heater body 11, wherein the two mounting plates 12 are L-shaped, screws are rotationally twisted in the two mounting plates 12, the two mounting plates 12 are respectively fixed with the inner wall of the shell 1 through screws, three penetrating rods 25 are fixedly arranged on a rectangular frame 2, each penetrating rod 25 movably penetrates the rectangular frame 2, three fixing plates 27 are fixedly arranged at the outer side end part of the rectangular frame 2, each penetrating rod 25 movably penetrates the fixing plates 27, a round sleeve 26 is fixedly arranged on each penetrating rod 25, each round sleeve 26 is positioned at the outer side of the rectangular frame 2, wherein, a first spring 28 is arranged between each round sleeve 26 and each fixed plate 27, a driving gear 73 is fixedly arranged on a driving shaft 71, a driven gear 54 is fixedly arranged on a second connecting shaft 5, a first driving belt 74 is sleeved on the driven gear 54 and the driving gear 73, a first connecting shaft 46 is rotatably arranged on a fixed frame 4, a second gear 48 is meshed with a third gear 51, a second conical gear 47 is fixedly arranged on the first connecting shaft 46, a second gear 48 is fixedly arranged in the fixed frame 4, a rotating shaft 42 is fixedly arranged on each cooling fan blade 41, each rotating shaft 42 is rotatably arranged on the second gear 48, a first gear 43 is fixedly arranged on each rotating shaft 42, a first driving belt 44 is sleeved on the three first gears 43, a first conical gear 45 is fixedly arranged on the rotating shaft 42 positioned on one side, the first conical gear 45 is meshed with the second conical gear 47, wherein, the protecting shell 16 is fixedly arranged on the shell 1, the motor 7 and the driving gear 73 are positioned in the protecting shell 16, the baffle 65 is fixedly arranged on the plugging plate 6, the clamping block 62 is slidably arranged on the plugging plate 6, the round rod 63 is fixedly arranged on the clamping block 62, the round rod 63 movably penetrates through the baffle 65, the round rod 63 is sleeved with the spring II 64, the clamping block 62 is fixedly connected with the baffle 65 through the spring II 64, the clamping block 62 is movably clamped in the arc-shaped clamping groove 53, when the second dust screen 24 is blocked, the motor 7 operates, the driving shaft 71 rotates, the cam 72 is driven to rotate by the rotation of the driving shaft 71, when the protruding part of the cam 72 is contacted with the surface of the contact plate 22, the cam 72 applies a pushing force to the contact plate 22, the frame 23 is driven to move by the contact plate 22, the penetrating rod 25 and the round sleeve 26 are driven, the round sleeve 26 applies a force to the spring I28, the spring I28 is stressed and compressed, when the protruding part of the cam 72 is not contacted with the surface of the contact plate 22, the elastic reset action of the spring I28 is utilized to reset the frame 23, the frame 23 horizontally reciprocates through the continuous rotation of the cam 72 and generates vibration, so that dust or impurities attached to the second dust screen 24 shake and fall off, the self-cleaning effect is achieved, the condition that the second dust screen 24 is blocked is solved, the circulation of outside air and air in the shell 1 is ensured, the condition that the air is not circulated due to the blocking of the second dust screen 24, the temperature rise of the PTC heater body 11 is caused, the damage of an electronic element or the PTC heater body 11 is caused, the driving gear 73 is driven to rotate when the driving shaft 71 rotates, the driving gear 73 and the driven gear 54 are sleeved with the driving belt II 74, the driving gear 73 rotates to drive the driven gear 54 to rotate, the second connecting shaft 5 is driven to rotate through the rotation of the driven gear 54, the rotating disc 52 is driven to rotate through the rotation of the second connecting shaft 5, the position of the rotating disc 52 changes through the rotation of the rotating disc 52, the clamping block 62 is separated from the arc-shaped clamping groove 53, the clamping block 62 is not blocked at the moment, the blocking plate 6 rotates by taking the fixed shaft 61 as the axis through the elastic reset action of the torsion spring, the blocking plate 6 overturns, the blocking plate 6 does not block the port of the fixed frame 4 any more, the heat conducting plate 3 is exposed to the outside at the moment, the radiating fins 31 are fixedly arranged at equal intervals at the bottom end of the heat conducting plate 3, the heat inside the shell 1 is transferred to the heat conducting plate 3 and the radiating fins 31, the heat is dissipated into the air through the heat conducting plate 3, the purpose of radiating and cooling the PTC heater body 11 is achieved, further, the problem that the PTC heater body 11 is high in temperature and the electronic element or the PTC heater body 11 is damaged due to the fact that air is not circulated due to the blocking of the second dust screen 24 is solved, the integrity of the PTC heater body 11 is guaranteed, the air supply fan 14 is started, the heat of the PTC heater body 11 which is electrically heated is sent out from the air outlet 13 to play a role in heating is solved, when the PTC heater body 11 is maintained at the normal temperature, the blocking plate 6 is arranged on the fixed frame 4, the loss of heat from the through hole can be effectively avoided due to the blocking of the port of the fixed frame 4 by the blocking plate 6, the loss of heat is reduced, the structure design is reasonable, the connecting shaft II 5 can drive the gear III 51 to rotate when rotating, the gear III 48 can be driven to rotate through the rotation of the gear III 51, the connecting shaft I46 can be driven to rotate through the rotation of the gear II 48, the rotation of the connecting shaft I46 drives the bevel gear II 47 to rotate, the rotation of the bevel gear II 47 drives the bevel gear I45 to rotate, the rotation of the bevel gear I45 drives the rotating shaft 42 to rotate, the three gears I43 are sleeved with the transmission belt I44, so that the three radiating fan blades 41 rotate, the heat of the heat conducting plate 3 is radiated and cooled through the rotation of the three radiating fan blades 41, the efficient heat transfer of the heat conducting plate 3 is ensured, the efficient temperature reduction of the heat conducting plate 3 and the radiating fins 31 to the temperature of the PTC heater body 11 is improved, the cooling efficiency of the PTC heater body 11 is improved, the PTC heater body 11 is quickly maintained in a normal temperature range, the damage of the PTC heater body 11 and electronic elements caused by high temperature is avoided, when the plugging plate 6 needs to be reset, the staff rotates and resets the turntable 52 by starting the motor 7, then presses the plugging plate 6 and pushes the clamping block 62, at the moment, the second spring 64 is in a stressed and compressed state, when the plugging plate 6 completely covers the port of the fixed frame 4, the clamping block 62 is loosened, the clamping block 62 is inserted into the arc clamping groove 53 on the turntable 52 by the elastic reset action of the second spring 64, the blocking of the position of the clamping block 62 is realized, at the moment, the plugging plate 6 is fixed on the port of the fixed frame 4, the plugging of the heat conducting plate 3 is realized, the installation and the resetting of the plugging plate 6 are more convenient, when the PTC heater body 11 is not abnormal at high temperature, the plugging plate 6 is used for preventing heat loss, when the PTC heater body 11 is abnormal at high temperature, the plugging plate 6 is opened, the heat on the PTC heater body 11 is transferred by the heat conducting plate 3 and the heat radiating fins 31, and the rotation of the heat radiating fan blades 41 are matched, the heat dissipation and the cooling of the PTC heater body 11 are more efficient, the frame 23 and the second dust screen 24 are matched to shake, dust on the frame 23 and the second dust screen 24 is shaken and falls, so that outside air and the air inside the shell 1 circulate normally, the heat dissipation and the cooling of the PTC heater body 11 are more efficient, the self-protection effect is achieved, the PTC heater body 11 is prevented from being damaged due to the abnormality of high temperature, and the integrity of the PTC heater body 11 is ensured.
Working principle:
when the second dust-proof net 24 is blocked to cause the PTC heater body 11 to be abnormal at high temperature, the motor 7 operates, so that the driving shaft 71 rotates, the cam 72 is driven to rotate by the rotation of the driving shaft 71, when the protruding portion of the cam 72 contacts with the surface of the contact plate 22, the cam 72 applies a pushing force to the contact plate 22, so that the contact plate 22 pushes the frame 23 to move, the frame 23 drives the through rod 25 and the round sleeve 26 to move, the round sleeve 26 applies an acting force to the first spring 28, so that the first spring 28 is stressed and compressed, when the protruding portion of the cam 72 does not contact with the surface of the contact plate 22, the frame 23 is reset by the elastic reset action of the first spring 28, and the frame 23 is continuously rotated by the cam 72, so that the frame 23 horizontally reciprocates and vibrates, so that dust or impurities attached to the second dust-proof net 24 drop, a self-cleaning effect is achieved, the condition that the second dust-proof net 24 is blocked is solved, the circulation of outside air and the inside the housing 1 is ensured, and the PTC heater body 11 is prevented from being damaged due to the blocking of the second dust-proof net 24.
The second step, can drive the driving gear 73 and rotate when the drive shaft 71 rotates, the cover is equipped with the drive belt two 74 on driving gear 73 and the driven gear 54, the driving gear 73 rotates and can drive driven gear 54 and rotate, can drive connecting axle two 5 through the rotation of driven gear 54 and rotate, can drive carousel 52 through the rotation of connecting axle two 5, through the rotation of carousel 52, the position of carousel 52 changes, thereby make fixture block 62 break away from arc draw-in groove 53, fixture block 62 can not receive the jam this moment, utilize the elasticity reset effect of torsional spring, make shutoff board 6 rotate with fixed axle 61 as the axle center, make shutoff board 6 upset past, make shutoff board 6 no longer block up the port of fixed frame 4, at this moment, heat conduction board 3 exposes to the outside, distance fixed mounting has radiating fin 31 through the bottom of heat conduction board 3, make the inside heat transfer of shell 1 to on heat conduction board 3 and radiating fin 31, the heat gives off in the air, the purpose to PTC heater body 11 has been played, further, the problem is solved because second dust screen 24 blocks up and causes the air not to block up, PTC heater body 11 or PTC heater 11 heat dissipation element 11 well-distributed, PTC heater 11 good heat dissipation condition has been guaranteed because PTC heater body 11 has been guaranteed the good heat circulation condition.
Third step, start fan 14 for PTC heater body 11 electrical heating's heat is sent out from air outlet 13, has played the effect of heating, installs shutoff board 6 on through fixed frame 4, when PTC heater body 11 keeps at normal temperature, because shutoff board 6 shutoff the port of fixed frame 4, can effectually avoid heat to run off from the opening, has reduced thermal loss, structural design is reasonable.
Fourth, the connecting axle two 5 can drive the gear three 51 and rotate when rotating, can drive the gear two 48 and rotate through the rotation of gear three 51, can drive the connecting axle one 46 and rotate through the rotation of gear two 48, can drive the bevel gear two 47 and rotate through the rotation of connecting axle one 46, can drive the bevel gear one 45 and rotate through the rotation of bevel gear two 47, can drive pivot 42 and rotate through the rotation of bevel gear one 45, because the cover is equipped with drive belt one 44 on three gear one 43, make three heat dissipation flabellum 41 rotate, can dispel the heat the cooling to the heat conduction board 3 through the rotation of three heat dissipation flabellum 41, the efficient heat transfer of heat conduction board 3 has been guaranteed, thereby the high-efficient cooling to PTC heater body 11 temperature of heat conduction board 3 and heat dissipation fin 31 has been improved, the efficiency to PTC heater body 11 cooling, make PTC heater body 11 maintain in normal temperature range fast, thereby avoid high temperature to cause PTC heater body 11 and electronic component's damage.
Fifthly, when the plugging plate 6 needs to be reset, a worker rotates and resets the turntable 52 by starting the motor 7, presses the plugging plate 6 and pushes the clamping block 62, the second spring 64 is in a stressed compression state, when the plugging plate 6 completely covers the port of the fixed frame 4, the clamping block 62 is loosened, the clamping block 62 is inserted into the arc-shaped clamping groove 53 on the turntable 52 by using the elastic reset function of the second spring 64 to block the position of the clamping block 62, the plugging plate 6 is fixed on the port of the fixed frame 4, the plugging of the heat conducting plate 3 is realized, the installation and the resetting of the plugging plate 6 are more convenient, when the PTC heater body 11 is not abnormal at high temperature, the heat loss is prevented by plugging the plugging plate 6, when the PTC heater body 11 is abnormal in high temperature, the plugging plate 6 is opened, heat on the PTC heater body 11 is transferred by the heat conducting plate 3 and the heat radiating fins 31, the rotation of the heat radiating fan blades 41 is matched, so that the heat radiation and the temperature reduction of the PTC heater body 11 are more efficient, the shaking of the frame 23 and the second dustproof net 24 is matched, dust on the frame 23 and the second dustproof net 24 is shaken and falls, the outside air and the air in the shell 1 circulate normally, the heat radiation and the temperature reduction are carried out on the PTC heater body 11 more efficiently, the self-protection effect is achieved, the damage of the PTC heater body 11 caused by the abnormal high temperature is avoided, and the integrity of the PTC heater body 11 is ensured.
Finally, it should be noted that: it is apparent that the above examples are only illustrative of the present invention and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (10)
1. The utility model provides a take self-protection structure's PTC heater, includes shell (1) and installs PTC heater body (11) in shell (1), its characterized in that: an air outlet (13) is formed in the front surface of the shell (1), a blowing fan (14) is arranged in the air outlet (13), a first dustproof net (15) is arranged in the air outlet (13), the first dustproof net (15) is positioned on the front side of the blowing fan (14), a rectangular frame (2) is fixedly arranged at the back end of the shell (1), the middle part of the rectangular frame (2) is of a hollow design, the middle part of the rectangular frame (2) is communicated with the inside of the shell (1), a frame (23) is arranged in the rectangular frame (2) in a sliding mode, and a second dustproof net (24) is embedded in the frame (23);
the heat conducting device comprises a frame (23), wherein a connecting block (21) is fixedly arranged on the frame (23), the connecting block (21) movably penetrates through a rectangular frame (2), a contact plate (22) is fixedly arranged on the connecting block (21), a heat conducting component is arranged on a shell (1) and comprises a heat conducting plate (3), a through hole is formed in the upper surface of the shell (1), the heat conducting plate (3) is fixedly arranged in the through hole, and radiating fins (31) are fixedly arranged at equal intervals at the bottom end of the heat conducting plate (3);
the upper end of the shell (1) is fixedly provided with a fixed frame (4), the upper end of the fixed frame (4) is provided with a plugging plate (6), the plugging plate (6) is fixedly provided with a fixed shaft (61), the plugging plate (6) is hinged with the fixed frame (4) through the fixed shaft (61), the fixed shaft (61) is provided with a torsion spring, the plugging plate (6) is positioned at the upper end of the through hole, the fixed frame (4) is provided with a driving assembly, the driving assembly comprises a second connecting shaft (5), one end of the second connecting shaft (5) is rotatably arranged in the fixed frame (4), the second connecting shaft (5) is fixedly provided with a third gear (51) and a rotary disc (52), the surface of the rotary disc (52) is provided with an arc-shaped clamping groove (53), three cooling fan blades (41) are arranged in the fixed frame (4), and the three cooling fan blades (41) are positioned above the heat conducting plate (3);
the device comprises a shell (1), and is characterized in that a jacking component is arranged on the shell (1), the jacking component comprises a motor (7), the motor (7) is fixedly installed on the shell (1), a driving shaft (71) is fixedly connected with an output shaft of the motor (7), a cam (72) is fixedly installed on the driving shaft (71), and a protruding portion of the cam (72) is attached to the surface of a contact plate (22).
2. A PTC heater with self-protecting structure according to claim 1, wherein: mounting plates (12) are fixedly arranged at the end parts of two sides of the PTC heater body (11);
the two mounting plates (12) are L-shaped, screws are rotationally twisted in the two mounting plates (12), and the two mounting plates (12) are respectively fixed with the inner wall of the shell (1) through the screws.
3. A PTC heater with self-protecting structure according to claim 1, wherein: three penetrating rods (25) are fixedly arranged on the rectangular frame (2);
wherein each penetrating rod (25) movably penetrates through the rectangular frame (2).
4. A PTC heater with self-protection structure according to claim 3, wherein: three fixing plates (27) are fixedly arranged at the outer side end part of the rectangular frame (2);
wherein each penetrating rod (25) movably penetrates through the fixing plate (27) respectively, and a round sleeve (26) is fixedly arranged on each penetrating rod (25).
5. A PTC heater with self-protecting structure according to claim 4, wherein: each round sleeve (26) is positioned on the outer side of the rectangular frame (2);
a first spring (28) is arranged between each round sleeve (26) and each fixing plate (27).
6. A PTC heater with self-protecting structure according to claim 1, wherein: a driving gear (73) is fixedly arranged on the driving shaft (71), and a driven gear (54) is fixedly arranged on the second connecting shaft (5);
wherein, driven gear (54) and driving gear (73) are gone up to overlap and are equipped with drive belt two (74).
7. A PTC heater with self-protecting structure according to claim 1, wherein: a first connecting shaft (46) is rotatably arranged on the fixed frame (4), and a second gear (48) is fixedly arranged on the first connecting shaft (46);
the second gear (48) is meshed with the third gear (51), and the first connecting shaft (46) is fixedly provided with a second conical gear (47).
8. A PTC heater with self-protecting structure according to claim 7, wherein: a gear II (48) is fixedly arranged in the fixed frame (4), a rotating shaft (42) is fixedly arranged on each radiating fan blade (41), and each rotating shaft (42) is rotatably arranged on the gear II (48);
each rotating shaft (42) is fixedly provided with a first gear (43), and the three first gears (43) are sleeved with a first transmission belt (44).
9. A PTC heater with self-protecting structure according to claim 8, wherein: a first conical gear (45) is fixedly arranged on the rotating shaft (42) positioned at one side, and the first conical gear (45) is meshed with a second conical gear (47);
the motor (7) and the driving gear (73) are positioned in the protective shell (16).
10. A PTC heater with self-protecting structure according to claim 1, wherein: a baffle (65) is fixedly arranged on the plugging plate (6), a clamping block (62) is slidably arranged on the plugging plate (6), a round rod (63) is fixedly arranged on the clamping block (62), and the round rod (63) movably penetrates through the baffle (65);
the round rod (63) is sleeved with a second spring (64), the clamping block (62) is fixedly connected with the baffle (65) through the second spring (64), and the clamping block (62) is movably clamped in the arc-shaped clamping groove (53).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311551240.6A CN117279131B (en) | 2023-11-21 | 2023-11-21 | PTC heater with self-protection structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311551240.6A CN117279131B (en) | 2023-11-21 | 2023-11-21 | PTC heater with self-protection structure |
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| CN117279131B true CN117279131B (en) | 2024-02-13 |
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| CN108668481A (en) * | 2018-05-21 | 2018-10-16 | 浙江欧兰顿电器科技有限公司 | A kind of earth leakage protective device of safety-type PTC heating components |
| CN108882400A (en) * | 2018-07-13 | 2018-11-23 | 田峰业 | waterproof PTC heater |
| CN112466709A (en) * | 2020-12-08 | 2021-03-09 | 漳州雅宝电子股份有限公司 | Over-temperature protection device with over-temperature protection and highest-temperature permanent cut-off circuit |
| CN117082656A (en) * | 2023-10-16 | 2023-11-17 | 深圳市赛尔盈电子有限公司 | Supporting seat for PTC heater and PTC heater thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090237879A1 (en) * | 2008-03-19 | 2009-09-24 | Chun-Ju Lin | Electronic device having a heat dissipating mechanism |
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2023
- 2023-11-21 CN CN202311551240.6A patent/CN117279131B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108668481A (en) * | 2018-05-21 | 2018-10-16 | 浙江欧兰顿电器科技有限公司 | A kind of earth leakage protective device of safety-type PTC heating components |
| CN108882400A (en) * | 2018-07-13 | 2018-11-23 | 田峰业 | waterproof PTC heater |
| CN112466709A (en) * | 2020-12-08 | 2021-03-09 | 漳州雅宝电子股份有限公司 | Over-temperature protection device with over-temperature protection and highest-temperature permanent cut-off circuit |
| CN117082656A (en) * | 2023-10-16 | 2023-11-17 | 深圳市赛尔盈电子有限公司 | Supporting seat for PTC heater and PTC heater thereof |
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